w83977tf Winbond Electronics Corp America, w83977tf Datasheet - Page 139

• Manufacturer Part Number: w83977tf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

12.3.1 AC Characteristics, FDC continued
Notes:
1. Typical values for T = 25 C and normal supply voltage.
2. Programmable from 2 mS through 32 mS in 2 mS increments.
PARAMETER
IOW or IOR response time
from DRQ
TC width
RESET width
INDEX width
DIR setup time to STEP
DIR hold time from STEP
Write precompensation
STEP pulse width
STEP cycle width
WD pulse width
SYM.
T
T
T
T
T
T
T
T
T
T
MRW
WDD
WPC
RST
DST
STD
STP
IDX
TC
SC
TEST
CONDITIONS
- 128 -
MIN.
24/40/48
135/220
6.8/11.5
100/185
100/138
1.8/3/3.
0.5/0.9
1.0/1.6
Note 2
/13.8
/260
/225
/225
/1.0
/2.0
5
Publication Release Date: March 1998
TYP.
(NOTE 1)
125/210
125/210
Note 2
/20/24
7/11.7
6/12
/250
/250
/14
PRELIMINARY
W83977TF
MAX.
7.2/11.9
150/235
150/235
Note 2
/14.2
/275
/275
Revision 0.62
UNIT
nS
S
S
S
S
S
S
S
S
S